Plant Diseases
Particularly troublesome where rainfall and relative humidity are high, and under overtree irrigation, apple scab can defoliate trees and blemish fruit to a point where it is unmarketable. Learn...
Beware Signs of White Rot in Garlic and Other Allium Crops
White rot is a very serious disease of garlic and onion. This three-page Green Thumb publication will help you to identify the disease and prepare a defense against its growth in your garden,...
Choosing and Growing Adapted Vegetable Varieties
Recommended vegetable varieties for short-season, high-altitude regions, including cool-season hardy vegetables; cool-season tender vegetables; and tender warm-season vegetables. Authors: Stephen...
Diagnosing and Managing Rhizoctonia in Idaho Bean Crops
Rhizoctonia root rot is an important bean disease in southern Idaho crops that has caused from 30% to 100% yield loss, depending on the degree of severity. The culprit is a soilborne fungus,...
Gardening Strategies for Short-Season, High-Altitude Zones
Part of the short-season, high-elevation gardening series, this publication covers plant selection, plant placement, management of plant growth rate and maturity, season-extending techniques and...
Growing Peppers in Short-Season, High-Altitude Idaho Gardens
Peppers are difficult to grow if you garden or farm at high elevations (above 4000 feet). This publication will help you to improve the odds by choosing the best type of soil; implementing season...
Growing Small-Fruit Crops in Short-Season Gardens
Choosing hardy and early maturing small-fruit varieties is critical to gardening success as is using proper maintenance techniques. Part of the Short-Season, High-Altitude Gardening series, this...
Growing Tomatoes in Cool, Short-Season Locations
Part of the short-season, high-altitude gardening series, this publication provides tips and strategies for growing tomatoes in harsh climates. Authors: Michael Bauer, Danny L. Barney, Jo Ann...
Growing Tree Fruits in Short-Season Gardens
Producing your own backyard tree fruit in Idaho's harsher climates can be difficult, but it isn't impossible. There are many types of apples, apricots, cherries, pears and plums that you can...
Hardy Roses for Harsh Climates
Love roses but live in a cold, high-elevation Idaho location? Don't worry. You can still grow many beautiful kinds of the national flower. Stephen L. Love studied dozens of rose varieties for their...
Help Protect the Famous Idaho Potato: Diagnose and Control Late Blight in Your Home Garden
Potato and tomato plants are susceptible to late blight, a disease caused by a fungal-like pathogen that caused the Irish Potato Famine of 1845–52. The disease is still with us today and continues...
Integrated Pest Management of Aphids in Cereals
Insect and disease pests are prevalent in both residential and commercial food production settings, meaning that a large number of Idahoans contend with them each year. Part of an integrated pest...
Integrated Pest Management of Fusarium Dry Rot in Potato
Insect and disease pests are prevalent in both residential and commercial food production settings, meaning that a large number of Idahoans contend with them each year. Part of an integrated pest...
Integrated Pest Management of Pea Aphids in Legumes
Insect and disease pests are prevalent in both residential and commercial food production settings, meaning that a large number of Idahoans contend with them each year. Part of an integrated pest...
Introduction to Short-Season Gardening in Idaho
Part of the short-season, high-elevation gardening series, this publication describes Idaho's three short-season climates (high desert; cool, moist locations typical of the Idaho panhandle; and...
Landscaping with Native Plants
Cultivate healthier soils and more resilient plants on your Idaho property by using plants native to the Intermountain West in your landscape design. This extensive bulletin, with astute insights...
Landscaping with Native Plants
Cultivate healthier soils and more resilient plants on your Idaho property by using plants native to the Intermountain West in your landscape design. This extensive bulletin, with astute insights...
Lawn Care in Short-Season, High-Altitude Zones
Curious about how to maintain a healthy lawn in Idaho's short-season, high-altitude climates? It's a bit more challenging to do than in other areas of the state. Learn how to navigate their...
Managing Bacterial Ring Rot of Potato
Bacterial ring rot, caused by the bacterium Clavibacter sepedonicus, is one of the most destructive potato diseases in the world. Because losses due to stored, decaying potatoes can be substantial,...
Managing Soils in Short-Season, High-Altitude Zones
Part of the short-season, high-elevation gardening series, this publication describes the three basic soil types in Idaho's short-season, high-elevation gardening zones and offers management...
Physiological Leaf Roll of Tomato
This publication helps distinguish between tomato physiological leaf roll and infectious plant diseases that can cause yield and fruit quality losses. Also discusses leaf roll management strategies...
Phytophthora Bleeding Canker of Maple Trees
Bleeding canker has recently been observed on mature maple trees in southern Idaho. The causal agent is Phytophthora cactorum, a plant pathogen capable of infecting over 200 tree species. Given its...
Potato Mop-Top Virus: Biology and Disease Management
Potato mop-top causes dark, internal blemishes in potatoes. Because it is an emerging disease in the United States and no control measures yet exist, growers need to know the basic facts to...
Powdery scab is a formidable and damaging fungus-like pathogen that damages potatoes worldwide. It causes gall formation on roots as well as lesions on the tubers, which reduce potato quality as...
Selecting, Planting, and Caring for Trees, Shrubs, and Vines
Because they come in a variety of sizes and shapes, woody plants (trees, shrubs and vines) are unique landscape elements that can provide scale and balance, soften a building's hard edges and/or...
Short-Season Vegetable Gardening
Pacific Northwest gardeners often find the growing season too short to grow vegetables. Two horticulturists detail the special practices (including soil preparations, protective coverings,...
Spring Vegetable Planting Guide for Idaho
Idaho's diverse climate makes it a challenging place to grow vegetables, so if you're planning to start a vegetable garden this spring, this planting guide is for you. It provides basic, crucial...
Take-All Disease of Wheat in Idaho
Take-all is a highly destructive fungal disease of cereals whose ability to infect multiple plant parts often results in a crop’s complete destruction. Mainly found in wheat, barley, rye and...
Verticillium Wilt of Trees in Idaho
Verticillium wilt is a devastating soilborne disease to over three hundred plants worldwide, including trees, shrubs, fruits and vegetables. Given the fungi’s wide range, whose infection in trees...